Improvement in pump-pistons



P. ZEIHER. Pump-Pistons.-

Patented June 18, T8172.

UNITED STATES PATENT OFFICE.

PETER ZEIHEE, OF FOMEROY, OHIO, AssIGNOE To HIMsELF, .'IOHN HAHN, JOHN WOLF, AND HENRY sTAHL, OF sAME PLACE.

IMPROVEMENT IN PUMP-PISTONS.

Specification forming part of Letters Patent No. 129,196, dated June 18, 1872.

To all lwhom it may concern:

Be it known that l, PETER ZEIHER, of Pomeroy, in the county of Meigs and State of Ohio, have invented certain new and useful Improvements in Pumps, of which the following is a specification, reference being had to the accompanying drawing.

N atnre and Objects of the Intention.

Description of the Accompanying Drawing.

The accompanying drawing is a vertical central section of a device embodying the elements of the invention.

General Description.

A in the accompanying drawing lis the main guide to the aperture, in the crown of which the power may be applied. This guide is secured by the threaded sleeves a to the pumprods N, which pass downward through the rim B, which is secured to the hollow piston T, which is provided with the rim C, connected with base-ring S by the rods Q. The piston T is fixed in a stationary position, its

lower end being provided with the expanded' induction-chamber Z, the lower superficies of which are conical, its lower edges being of suficient circumference to iit between the valve O and the adjacent walls of the cylinder L.

The upper part of the cap Z is provided with a hollow rim over the aperture, in the center of which is placed the valve F, which opens Y upward. The expanded induction-chamber Z is also provided on its outer circumference, near its upper edge, with a packing-rim, N, the edge of which impinges upon the inside of the cylinder L, and corresponds in size with the packing-ange E, secured to the lower end of the piston T. The collar E consists of a vertical hoop or band, having an internal horizontal rim, the hoop fitting within the upper upright langes oi' the cylinder L, while the piston T passes through the aperture in the center of the rim. The cylinder L is hollow and of such circumference as to inclose the piston T and the expanded induction-chamber Z. It is secured to the pump-rods N, andrises and descends upon the piston T when the main guide A is operated. The lower part of the cylinder L is provided with the expanded induction-chamber V, the lower superficies of which are conical, the upper vertical, and similarly constructed to the corresponding parts of the expanded induction-chamber Z. It has likewise a valve, O, opening upward, but has not the packing-rim E. The upper part of the cylinder L is provided with the packingrim'H, against which the packing-rim E of the piston impin ges when the cylinder is forced downward its full extent. The cylinder L is also provided at its upper and lower ends, respectively, with the iianges I and M, in which the pump-rods N are secured.

Operation.

The device being secured by the base-ring S in an upright and proper position, the cylinder L is forced down into the uid to be elevated, the valve O is thus 'thrown open, and the cylinder becomes iilled with the iiuid. A contrary movement of the main guide A elevates the cylinder L, and the iuid therein closes the valve O. As the cylinder L is elevated theY valve F is thrown open, and the fluid passes through the aperture in the expanded induction-chamber Z into the piston T, the cylinder is then forced downward which closes the valve F, and thus the iiuid raised by the last upward movement of the cylinder is retained in the piston T, the operation being continued until the piston is full, when the iiuid may be removed from the top thereof by a spout or other suitable means.

I am aware that telescopic cylinders, large at the base-which is the moving part-have been made and used 5 but the present invention is designed for elevating viscid semi-fluid and gross substances, and the `improvements 1er E', and operated by the pump-rods N, substantially as shown and described.

3. The piston T, provided with the packing-rim E, and expanded channel Z, substantially as shown and described.

PETER ZEIHER.

Witnesses J AooB BIRD, DEWITT TURNER. 

